Rather than review this book formally, now that I've read it, I'll just ramble on various thoughts I have until they become coherent to me.
Arthur Clarke and co-author, more than a novel, seem to have sketched a kind of Utopian vision - where technology and circumstance conspire to result in a radically altered World, free of crime, violence and treachery in the face of impending doom. The basic precept can be summed up by the clamly phrase thus "Good information = Increased crime... Perfect information = No crime".
Although I have reservations about the simplicity of this concept, evidence about the effects of good information on crime and war are encouraging. The rise of the internet and video phones everywhere has considerable curtailed certain types of crime/war. New crimes that rely on this new technology have risen as well, but arguably, these new crimes have less scope to be as organised to be destructive to society as the old ones were.
My two objections existing from before I read the novel remain even given the assumptions of possibility within the book:
1) Perfect information is impossible. At the margin the limit of the speed of light will mean that one person will be able to know and react to something before another, and "first-mover advantage" will always be relevant and a source of moral hazard. Even the amazing technology of perfect vision of past and current events evident in the novel doesn't meet, say, the perfection of knowledge attributable to a higher being. The utopian vision, however, makes this point moot, as the available information becomes as good as it needs to be.
2) Both commerce and organised crime rely on an imbalance of information to some extent. If a customer knows as much as a supplier of a product, suppliers will not be able to make a reliable profit. At the margins, this could be considered criminal exploitation, but practically all profitable commerce relies heavily on trade secrets if not outright intellectual property. Not to mention the issue of electronic commerce if secure keys cannot be kept secure enough for people to trust it as a store of value.